US 2329805 A
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Description (OCR text may contain errors)
Sept. 21, 1943. Ffe. WILSON, SR
' ELECTRIC CABLE CUTTER Filed Dec. 30, 1942 2 Sheets-Sheet 1 Inventor Eed 61447219070, 87'.
9 y @Zwu Sept. 21, 1943. w so 5 2,329,805
ELECTRiGCABLE CUTTER Filed Dec. 30, 1942 2 sheets sheet 2 1 Inventor By imm- W W I I I W I] fancy- I t- ST PATENT; FFJG'E ELEornro-oABLEoUrTER l frreu awilsen, sr., Oakland, Calif. l ApplicationDecember so, 1942,.Serial No. 470,681. ,z'ciai s. otto-c1) e The present invention relates'to new and use ful improvements in electric cable cutters and has for its primary object-to provide, in a manner as hereinafter set forth, a tool of'thischaracter comprising an adjustable blade of novel construction whereby the insulation or other covering may be expeditiously out without damaging the wire.
Other objects of the invention are to provide an electric cable cutter of the character described which will be comparatively simple in construction, strong, durable, highly efficient and reliable in use, compact, safe and which may be manufactured at low cost.
All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein:
Figure 1 is a view in side elevation of an electric cable cutter constructed in accordance with the present invention.
Figure 2 is a view in rear elevation of the device. Figure 3 is a bottom plan view.
Figure 4 is a view principally in vertical section, taken substantially on the line l l of Figure 2.
Figure 5 is a view in horizontal section, taken substantially on the line 5-5 of Figure 4.
Figure 6 is a fragmentary view in vertical sectionthrough another form of the invention.
Figure 7 is a fragmentary view in front elevation of the modification.
Referring now to the drawings in detail, it will be seen that reference numeral I designates a substantially U-shaped, rearwardly inclined metallic handle, said handle including a tubular rear leg 2. Threaded on the upper end portion of the tubular leg 2 is a removable cap 3. A vertical threaded shank 4 of circular cross section depends from the bight portion of the handle I.
The leg 2 of the handle I includes a substantially solid lower portion 5 having formed therein a rectangular bore or passage 6 which extends downwardly at an inclination through the shank A. The passage 6 accommodates a slidably adjustable bar 1 of suitable metal. At itslower end, the .bar 1 terminates in a knife 8.
Rising fromthe upper end of the bar 1 is a rod 9 which passes slidably through the cap 3. A coil spring I!) on the rod 9 has oneend engaged beneath the cap 3 and'its' other end en-.- gages with the upper end of the barflffor yieldingly urging-the knife '8 downwardly. Athumb nut II is threaded on the upper endp'ortionzof the rod 9"and engaged with the cap t "for-raising the knife 3 against theztension'of the coil "spring insulation or other covering thereon.
I0. A thumb screwml2 is 'mounted'in theflower portion of the leg 2 for frictionally clamping the bar I with the knife 8 thereon in adjusted position.
Threadedly mounted on the shank 4 is a combined guard and guide It of substantially vshaped cross section. It will be observed that the knife 8 projects downwardly and forwardly in the guide l3. In the embodiment shown, the guide l3 comprises an upstanding neck I it which is threaded on the shank 4. A look nut 15 on the shank 4 is engageable with the neck It for se curing the removable guide l3 in position.
It is thought that the operation. of the device will be readily apparent from-= a consideration of the foregoing. Briefly, the knife 8 is adjusted in the guide l3 to cut'at the desired depth through the medium of the thumb nut ll. Of course, the thumb screw I2 is loosene to P mit adjustment of the blade 8, after which said thumb screw is again tightened on the bar 1. The guide I3 is then engaged with and drawn longitudinally on the electric cable in a manner to cause the knife'ii to penetrate and cut the In this manner any desired length of the insulation or other covering may be expeditiously split for removal from the wire without damaging said wire. In addition to functioning as a guide, the member 13 also serves as a shield or guard for the knife 8. The construction and arrangement is such that the guide I3 may be expeditiously removed from the handle I. Thus, various shapes and sizes of guides may be conveniently mounted for use on the handle I.
The embodiment illustrated in Figures 6 and 7 of the drawings is particularly adapted to cutv the insulation or other covering of the cable circumferentially. Toward this end, a guide It of substantially semi-circular cross section is the longitudinal guide l3. The guide It is mounted longitudinally of the cable whereby the knife 8 engages said cable transversely. The tool is then swung around the cable in an manner to cause the knife 8 to cut the insulation or other covering of said cable circumferentially. In other respects this form of the device is substantially similar structurally to the embodiment illuszwaos 1. An electric cable cutter comprising a substantially U-shaped handle, said handle including a tubular leg, a guide, for the reception of a cable, mounted on the bight portion of the handle, a bar mounted for sliding adjustment: in the tubular leg and projecting downwardly into the.
guide, a knife on the lower end of said bar, a cap on' the tubular leg, a rod on the bar extend v i-ng slidablythrough said. can, a: coil spring-on time rod engaged the bar for yieldingly mtg:- i'ng. the knife downwardly in. the: a nut threaded on; the rod. and engaged with. the cap for adjusting the. knife againstthea'tensi'on. at the coil spring; means; toir'releasa'hly seeming the knife in adjusted position, and means for securing the guide in position on the handle.
2. An electric cable cutter of the character described comprising a substantially U-shaped metallic handle including a tubular leg, 2. cap threaded on one end portion of said tubular leg, a threaded shank of circular cross section integral with the bight portion of the handle, a
substantially channel-shaped guide, said guide including a neck threaded on the shank for removabl'y mounting the guide on the handle, a lock nut engaged with the neck for releasably securing the guide in position on the handle, a metallic bar mounted for sliding adjustment in the tubular leg and extending through the shank into the guide, a knife on the bar in said guide,
a rod on one end of the bar extending slidably throughthe cap, acoi-l spring on the rod engaged with the bar for adjusting the knife in one direction, a thumb nut threaded on the rod and engaged. with; the cap ior' adjusting. the knife in the opposite: directiomr and. a thumb: screw threadedly mounted in the; tubular leg. and; engageahle with the" bar for releasably securing. the knitte in. adjusted; position. i